The requested URL was not found on this server

Hi,

I have copied my code from a publicly available server to my own machine.
I had to change a few settings to make it run locally such as the base_url.

When I access my site (using WAMP) I get the following error: The requested URL was not found....'.

I have create a custom controller that gets called when I arrive at my default controller. Within that custom controller I redirect the user to a login page.
On my public site it works fine and locally it cannot find it.

Any suggestions for debugging?

Thanks,